dispel

v.

c.1400, dispelen, from Latin dispellere "drive apart," from dis- "away" (see dis-) + pellere "to drive, push" (see pulse (n.1)). Since the meaning is "to drive away in different directions" it should not have as an object a single, indivisible thing (you can dispel suspicion, but not an accusation). Related: Dispelled; dispelling.